Always use --leg_only option.

dart/tests/language/language.status

 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 153 matching lines @@
 *FrogTest: Skip
 *FrogNegativeTest: Skip
 
 
 [ $component == dartium ]
 # TODO: These need to be retriaged.
 RichardsTest: Fail
 TypedMessageTest: Fail # Bug 5246195
 
 
-[ $component == frog || $component == leg ]
+[ $component == frog ]
 ToStringAsFixedTest: Fail # fails due to rounding in constant propagation
 
-[ $component == frogsh ||  $component == frog || $component == leg || $component == webdriver || $component == frogium ]
+[ $component == frogsh ||  $component == frog || $component == webdriver || $component == frogium ]
 # TODO(efortuna): Distinguish between specific browser being run for webdriver
 # (by flag option) to specify which tests pass.
 FactoryNegativeTest: Fail # Issue 417
 Factory3Test: Fail # Issue 417
 CallThroughNullGetterTest: Fail # Throw ObjectNotClosure instead of NullPointerException.
 OptimizedSetterTest: Fail # Issue 863
 
 FactoryImplementationTest: Fail # Issue 523
 
 ClassKeywordNegativeTest/01: Fail # Issue 874
@@ skipping 110 matching lines @@
 TypeVariableBoundsTest/02: Fail
 TypeVariableBoundsTest/05: Fail
 TypeVariableBoundsTest/06: Fail
 WrongNumberTypeArgumentsTest: Fail
 ImplicitThisTest/01: Fail # Issue 376
 ImplicitThisTest/02: Fail # Issue 376
 ImplicitThisTest/03: Fail # Issue 376
 ImplicitThisTest/04: Fail # Issue 376
 ImplicitThisTest/none: Fail # Issue 376
 
-[ ($component == frogsh ||  $component == frog || $component == leg || $component == frogium) && $unchecked ]
+[ ($component == frogsh ||  $component == frog || $component == frogium) && $unchecked ]
 PrivateMemberTest/01: Fail # test seems bad - see issue #353
 PrivateMemberTest/02: Fail # test seems bad - see issue #353
 PrivateMemberTest/03: Fail # test seems bad - see issue #353
 PrivateMemberTest/04: Fail # test seems bad - see issue #353
 StringConcatTest: Fail
 
-[ ($component == frogsh ||  $component == frog || $component == leg || $component == frogium) && $checked ]
+[ ($component == frogsh ||  $component == frog || $component == frogium) && $checked ]
 PrivateMemberTest/none: Fail # test seems bad - see issue #353
 
-[ $component == leg ]
-TypeVariableBoundsTest/none: Pass # I think the "cancel leg" message is confusing the test harness? Leg is bailing on all these tests after seeing the "extends" factory syntax.
-TypeVariableBoundsTest/03: Pass
-TypeVariableBoundsTest/04: Pass
-TypeVariableBoundsTest/02: Fail
-TypeVariableBoundsTest/06: Fail
-
-
-[ $component == frog || $component == frogsh || $component == leg ]
+[ $component == frog || $component == frogsh ]
 # these tests are inconsistent in frogium and frogsh-node, investigate
 InstanceofTest: Fail
 StaticField1RunNegativeTest: Pass
 StaticField2RunNegativeTest: Pass
 NumberSyntaxTest: Fail
 
 [ $component == frogium ]
 # these tests are inconsistent in frogium and frogsh-node, investigate
 StaticField1RunNegativeTest: Pass # but error is not correct
 StaticField2RunNegativeTest: Pass # but error is not correct
 InstanceofTest: Timeout
 NumberSyntaxTest: Timeout
 
 [ $arch == x64 ]
 *: Skip
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == arm ]
 *: Skip